Question

Simplify 3^5×3^4.a. 3×20b. 3^9c. 6^9d. 3^20I think its b but I am unsure.

Answer 1

Recalling the laws of exponents:

`a^m\cdot a^n=a^(m+n)`

So, for the number 3^5 times 3^4, we have:

`3^5\cdot3^4=3^(5+4)=3^9`

Therefore, the answer is the option b) 3^9.